BSAC 204-Before-final-exam_Part 1

What is the conjugate base of HCO₃^- ?

• H₂CO₃

• CO₃^2-

• CO₂

• CO₃^-

Which of the following CANNOT act as a Lewis acid ?

• AlCl₃

• Cu²⁺

• CO₂

• Cl^-

Which of the following species is the softest base?

• F^-

• Cl^-

• Br^-

• I^-

What is the estimated pK_a1 of H₂CO₃ ? (pK_a = 8-5p)

• 8

• 3

• -2

• -7

What is symbol of pure acetic acid?

• CH₃COOH (aq)

• CH₃COOH (l)

• CH₃CH₂COOH (aq)

• CH₃CH₂COOH (l)

Which of the following acids has its pKa value falling in the discrimination window of water?

• HNO₃

• HCl

• HClO₄

• HCOOH

Which species is formed when MgO reacts with H₂O?

• H⁺

• OH^-

• MgH₂

• O^2-

SO₂ can act as..............

• Lewis acid

• Lewis base

• Lewis acid and Lewis base

• Bronsted acid

When [Fe(H₂O)₆]³⁺ is in water, the solution is ......................  

• acidic

• basic

• neutral

• clouded

What is the pH of human's blood?

• 5.5

• 6.6

• 7.0

• 7.4